[Milsurplus] Possibly rare TBX-8 accessory ??

[David Stinson]

----- Original Message ----- 
From: "J Forster" <jfor at quik.com>


> Recently, I turned up a neat little box in the estate of a SK that is
> unfamiliar to me. The stencils on it say:
> 
>      CGQ-60133
>      Crystal Calibrator and Monitor
>      For use with TBX-8 Radio Equipment
>      Garod Radio Company
>      Contract  NX SR 71254
>...
> Is this a common unit? I've never seen it referenced anywhere. 
> Is there any doc on line for it?  What B battery does it take?

Sorry to take so long with this, John.
This TBX accessory is designed to keep your transmitter on freq.
It uses a single "D" cell for fils for the one tube,
and one of those thin, rectangular bias batteries
(7 1/2 volts) for the B+.  A 9-volter works just fine.
It used a little 4-inch antenna or any piece of wire.
You plug in a headset, hold down the momentary 
contact switch to light the filament and listen for the 
beat note against the crystal you select to set your tx freq.

Never seen documentation for it.
I have one and have seen a couple of others
over the last ten years, 
so would not call them "rare," 
but would call them "scarce" and quite useful.

73 Dave S.